Disclaimer: I do not own Kamen Rider and any other anime series which is included in this story.

Please, enjoy! Let the journey begin!

KAMEN RIDER DECADE: Journey to DiEnd of the Decade.

Prologue

"Kaito-kun!" I turned around as I heard a familiar voice, shouting my name out loud. A young girl wearing long blue dress reached down to her knees with a jacket covered outside, walking to my direction. She has a long raven hair with two small red ribbons on two shoulder sides of her hair and a pair of blue eyes.

"Yo! Good morning Yukino." I greeted my childhood a.k.a best friend… or to be more precise, only friend: Yukino Yukinoshita(1) with a smile.

"Good morning Kaito-kun." She nodded and gave me another sweet smile in return. God, how can she be so lovely right now…

Oh, ehem… Before I continue, I should introduce myself first, right? Hi, the name is Kaitosuke Kuroyuki (2). I'm a sixteen year-old teenage high school student from Ekoda High in Tokyo and the first child of my family. Currently I'm in the second year in my high school live and almost reach the end of it. I may not look like one, but I'm an anti-social outcast. Believe me, the reason why I said Yukino is my best and only friend because it is. I have no friend to be exact, zero, due to my status in the past but I don't really care about it, just let it come and go, like the wind of the season. After all, I chose my path as a pathetic loner because it would suited me better than anything else. Anyway, although being like that, I'm quite talented in many fields. For sports, I play football and also learn martial arts as well. In terms of music, I can played piano and violin, only those two instruments. Cooking is also my other hobby, and photographing is the other one. I also consider myself as a Kamen Rider fan, especially Decade series. That's why in my bag, I brought myself merchandise from the series: Decadriver and Ride Booker, along with DiEndriver. I also wore a white T-shirt inside the jacket from the Decade series, the one that Tsukasa wore as a Dai-shocker leader. To be honest, it's not really cheap at all. I also had a black fedora on my head, along with black jeans and black sport shoes. Although I was on a date with Yukino, I still brought the merchandise with me because after the date, there's a convention take part nearby. Speaking of Yukino, I would like to introduce her as well, apart from her name which I've mentioned earlier. She's the only daughter of her family and a student from Ekoda High just like me, except from studying in different classes, but we still share a deep bond in our relationship. She was consider the prettiest girl in school but considered to have cold and unfriendly personality to everyone else… I was the only exception, due to our closeness. I met her in a warming afternoon 10 years ago, under a cherry blossom tree in a park. I was waiting for my uncle to finish his work from his workplace when suddenly I noticed her playing alone in a sandbox, trying to build a sand castle. I approached to her and asked her what she was doing. She replied with a harsh statement said that: "Don't you see what I'm doing? Are you blind or something?". Not so surprised with her reaction since I'm so used to it before from everybody else, but I told her: "Then care to enlighten me, princess?" She twitched her eyebrows in anger and we began to start our "argument" from then. After that, we started to hang out with each other, even went to the same junior high and senior high together. She's the only one know about my Kamen Rider collection and enthusiastic when I keep talking about it with her.

"I must say, you don't look bad for yourself, Kaito-kun." She said with a small giggle.

"The same to you as well, Ojou-san!" I answered with a teasing smile, making her eyebrows to twitch slightly but not enough for her to retort.

"Shall we go then, Ojou-san?" I asked, bowing myself lower and reached my right hand out, asking her permission to hold her hand during the date. She replied by placing her left hand on my right one "Please, lead the way!", and then we began to start our date.

The date went pretty well for me, we went to the mall to buy her some clothes, then to the game centre and won her a Pan-san (3) which made her really excited and gave me kiss on the cheek *Nailed it!*. We then went to the cinema to watch a movie and finished our date by having food at a restaurant. Right now, I'm taking her back to her apartment with a bag on my left hand. Yukino just holding the Pan-san doll and walking beside me. We haven't talked to each other since walking back from the restaurant.

"It was fun." I began the conversation to end this weird atmosphere between us.

"Yeah, it was." She nodded slightly. Then silence took over us again. Oh boy, this sure is weird, or so I thought.

But then, something much weirder was happening. Everything turned dark as night, the familiar scene of the sunset along the road was replaced with the eternal night sky and the park where I first met Yukino.

"What's happening?" I muttered to myself. Yukino then came close to me and rounded my right arm with hers.

"I don't know" was all she can say. But then came out from nowhere, an unfamiliar yet familiar man appeared right in front of us. I then realised who it was. He had a turtle neck shirt, black jacket, gray pants, and black shoes and a pink camera around his neck.

"T-Tsukasa K-K-Kadoya" I whispered in disbelief. Holy crap… my lips trembled, so did my legs. I can't believe it! Tsukasa Kadoya. The "Tsukasa Kadoya", a.k.a Kamen Rider Decade was right in front of me.

"Yo, New Decade." He greeted. 'Wait, New Decade? What does that mean?' I thought to myself.

"New Decade?" Yukino repeated, not understanding from what was happening earlier.

"Yes, you! Kaitosuke Kuroyuki. I suppose you know who I am, right?" He said, pointed his finger to me, making me gasped in surprise. 'Me?'

"Yeah... Tsukasa Kadoya, a.k.a Kamen Rider Decade, former leader of Dai-Shocker." I said, making Yukino jumped in surprise.

"Kamen Rider?" She asked, I then gave a nod in reply.

"Alright, it seems that there is no need for long introduction then, I come straight to business." The surrounding changed, from the park replaced with "Earths", more than 20 to be exact, around the couple and the Kamen Rider.

"The Worlds… Kamen Rider Worlds" I muttered in shock, still looking around me.

"Not just the Kamen Rider Worlds, there are others which are in great danger, because of… him" Tsukasa snapped his fingers, pointed behind me and Yukino. We turned around and saw the one which shocked me even more.

"Dark Decade." I gasped in horror, of course I know what Dark Decade will bring to us… Destruction and it only. That is the only reason why Dark Decade fight, to perish these worlds, or conquer them and control it.

"That's right. He's making the move and so as the other Dark Riders. We don't have much time left. You have to prevent it."

'What? ME? Prevent it? Is this some kind of cheap jokes or something because I'm not buying it.' I thought to myself.

"Why me? Why not you do something about it?" I asked out loud, making Yukino stepped back in surprise.

"Because… you're this Universe's Decade, and only you can stop it. I don't have any authority to do in this place. It's your own story to make. After all, this is your World." He explained to me. He turned back and walked away. He left me with his last words before disappearing:

"Just hurry up. There's no time, before the Rider War occur and I promise you that there's nothing good about it. Good luck, Kaitosuke Kuroyuki… no… Kamen Rider Decade. You need that. Farewell!" With that, he turned into nothingness, disappearing from our sights.

The scene turned backto normal where we stopped, but Tsukasa's words was still on my mind.

"Prevent it"

"Good luck"

"Kamen Rider Decade"

Suddenly, a moving gray mirror appeared from nowhere and engulfed us all. And so, my journey has begun.

-End-

(1) From Yahari ore no seishun love come wa machigatteiru series. I am a big fan of her. I have been thinking a lot of bringing her in as a main character of the story or not and I decided to.

(2) From Magic Kaito and Detective Conan series. Changing from "Kaito Kuroba" to a longer version. I still don't know if "Kuroyuki" is a surname or not.

(3) From Yahari ore no seishun love come wa machigatteiru series. Yukinoshita Yukino loves this panda brand. (Wiki)

That's it. My first chapter! I put it under "Anime Xover" because I'm gonna use a lot of anime series. Also, please forgive me if I made some grammatical and vocabulary errors. Well, have a very nice day!